1 /* SPDX-License-Identifier: GPL-2.0-or-later
2  *
3  * Linux driver for VMware's vmxnet3 ethernet NIC.
4  * Copyright (C) 2008-2023, VMware, Inc. All Rights Reserved.
5  * Maintained by: pv-drivers@vmware.com
6  *
7  */
8 
9 #ifndef _VMXNET3_XDP_H
10 #define _VMXNET3_XDP_H
11 
12 #include <linux/filter.h>
13 #include <linux/bpf_trace.h>
14 #include <linux/netlink.h>
15 
16 #include "vmxnet3_int.h"
17 
18 #define VMXNET3_XDP_HEADROOM	(XDP_PACKET_HEADROOM + NET_IP_ALIGN)
19 #define VMXNET3_XDP_RX_TAILROOM	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
20 #define VMXNET3_XDP_RX_OFFSET	VMXNET3_XDP_HEADROOM
21 #define VMXNET3_XDP_MAX_FRSIZE	(PAGE_SIZE - VMXNET3_XDP_HEADROOM - \
22 				 VMXNET3_XDP_RX_TAILROOM)
23 #define VMXNET3_XDP_MAX_MTU	(VMXNET3_XDP_MAX_FRSIZE - ETH_HLEN - \
24 				 2 * VLAN_HLEN - ETH_FCS_LEN)
25 
26 int vmxnet3_xdp(struct net_device *netdev, struct netdev_bpf *bpf);
27 int vmxnet3_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames,
28 		     u32 flags);
29 int vmxnet3_process_xdp(struct vmxnet3_adapter *adapter,
30 			struct vmxnet3_rx_queue *rq,
31 			struct Vmxnet3_RxCompDesc *rcd,
32 			struct vmxnet3_rx_buf_info *rbi,
33 			struct Vmxnet3_RxDesc *rxd,
34 			struct sk_buff **skb_xdp_pass);
35 int vmxnet3_process_xdp_small(struct vmxnet3_adapter *adapter,
36 			      struct vmxnet3_rx_queue *rq,
37 			      void *data, int len,
38 			      struct sk_buff **skb_xdp_pass);
39 void *vmxnet3_pp_get_buff(struct page_pool *pp, dma_addr_t *dma_addr,
40 			  gfp_t gfp_mask);
41 
vmxnet3_xdp_enabled(struct vmxnet3_adapter * adapter)42 static inline bool vmxnet3_xdp_enabled(struct vmxnet3_adapter *adapter)
43 {
44 	return !!rcu_access_pointer(adapter->xdp_bpf_prog);
45 }
46 
47 #endif
48